[1]: The goddess of Pleasure, Ἡδονή personified.
[2]: Apparently foreigners are considered among the lower animals.
[3]: This goddess may be Μουσική (in which case ἐγγενομένη the reading of T and G, would be preferable to ἐγγενόμενα above), not music in the restricted modern sense, but the spirit of numbers and measure which underlies all music, and all the beauties of the world; or the goddess may be mentioned here in reference (and opposition) to the goddess Pleasure (12 B); she is the nameless deity who makes Pleasure and all others conform to her rules.
[4]: Anaxagoras and probably some now unknown precursors.
[5]: Son of that man may mean son of Philebus, in so far as Protarchus is a pupil of Philebus, or (so Bury) son of Gorgias, the orator and teacher (cf. Plat. Phaedo 58b), or the father of Protarchus may be referred to by the pronoun, possibly because Socrates does not at the moment recall his name or because he wishes to imply that he was a man of mark.
[6]: Heracleitus and his followers.
[7]: This paradox means what those say it is who deny that it is really pleasure.
[8]: Hom. Il. 18.108-109
[9]: Hom. Il. 4.453.